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3 years ago

If a is negative and b is positive, is a2b positive or negative?

Mathematics

2 answers:

Mice21 [21]3 years ago

8 0

Answer:

Negative

Step-by-step explanation:

Lets look at it with numbers!

a=-2 , b=4

a*2b is -2*2(4) ---> -2*8 ---> -16

If you multiple a negative and a negative it will be positive, but if you multiply a positive and a negative it will be negative;

+ * + = +

+ * - = -

- * - = +

I hope this helps!

kolezko [41]3 years ago

6 0

Answer:

negative

Step-by-step explanation:

if you are multiplying with a negative and a positive it will always be negative. if you are multiplying with 2 positives or 2 negatives it will be positive. 2 negatives equalling a positive.

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1. Adrian invests $10,000 in an account that increases by 8% each year. What is the balance in the account after 15 years?

TEA [102]

Answer:

$162000

Step-by-step explanation:

8% of 10000

10000÷100=100×8=800

10000+800=10800

10800×15=162000

6 0

1 year ago

Can you break down how to solve the problem ?

Montano1993 [528]

Answer:

A. y = $\frac{-5x}{2}$ - 1

Step-by-step explanation:

Given parameters:

Equation of the line:

5x + 2y = 12

Coordinates = -2, 4

Unknown:

The equation of the line parallel to this line = ?

To solve this problem, first, we need to find the slope of the given line.

Every linear equation have the formula: y = mx + c

m is the slope of the line, c is the y- intercept

5x + 2y = 12

Express this equation as y = mx + c

2y = -5x + 12

y = $\frac{-5}{2}x$ + 6

The slope of this line is $\frac{-5}{2}$

Now, any line that is parallel to another will not cut or cross it at any point. This simply implies they have the same slope.

Slope of the line parallel is $\frac{-5}{2}$

Our new line will also take the form y=mx + c,

Coordinates = -2, 4, x = -2 and y = 4

m is $\frac{-5}{2}$

Now let us solve for C, the y-intercept;

4 = - 2 x $\frac{-5}{2}$ + C

4 = 5 + C

C = -1

The equation of the line is therefore;

y = $\frac{-5x}{2}$ - 1

6 0

3 years ago

A number cube with faces labeled from 1 to 6 was rolled 20 times. Each time the number

aliina [53]

3+5=8
8/20 =.4
.4 goes to 40% bc you move the decimal over twice

3 0

3 years ago

An image point has coordinates B'(7, -4). Find the coordinates of its pre-image if the translation used was (x + 4, y + 5).

Vera_Pavlovna [14]

Answer:

Step-by-step explanation:

B'(7, -4)

Let the pre-image coordinates be (x,y)

Consider x-coordinate,

x + 4 = 7

x = 3

Consider y-coordinates,

y + 5 = -4

y = -9

pre-image coordinates is (3, -9)

8 0

3 years ago

Read 2 more answers

Which graph is the graph of this function?

mihalych1998 [28]

Which graph is the graph of this function?

$f(x)= { \frac{1}{2}x-2$

if $x \leq 6$

So the graph is A.

Hope i've helped!

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3 years ago

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